Finding the Fourth Proportional to 67,783.61, 101,674.91 and 20,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,783.61 : 101,674.91 = 20,398.50 : x
2. Step 2: Convert to fraction form
   67,783.61/101,674.91 = 20,398.50/x
3. Step 3: Cross multiply
   67,783.61x = 101,674.91 × 20,398.50
4. Step 4: Simplify right side
   67,783.61x = 2,074,015,587.89
5. Step 5: Solve for x
   x = 2,074,015,587.89/67,783.61
6. Step 6: Final answer
   x = 30,597.60